Nested Tables

Nested tables are derived column types that can be thought of as a set of rows rather than single monolithic values. They are a way to organize data in Oracle and can be created when you are creating a table, or by adding it to an existing table. They are treated as a single value in the storage layer and as a set of rows in the user layer and supports a variety of operations including DML and DDL operations.

Benefits of Nested Tables

There are several benefits to using Nested Tables including improved performance, flexibility, reduced storage space and simplified data access.

• Improved performance - Nested Tables can improve performance by allowing you to reduce the number of joins needed to access data.
• Flexibility - Nested Tables give you the flexibility to modify the table structure, add or remove columns, and add or remove child rows as needed without affecting the rest of the data.
• Reduced storage space - Nested Tables can reduce storage space by eliminating duplicate data.
• Simplified data access - Nested Tables can simplify data access by providing a consistent way to access data, regardless of the structure of the underlying data.

Uses of Nested Tables

Nested Tables can be used to store various types of data for a variety of purposes including structuring complex data, storing semi-structured data, storing hierarchical data, and storing data that changes frequently. They can also be used in a variety of applications including data warehousing, data mining, and business intelligence.

Learning Nested Tables with Online Courses

There are several online courses available that can teach you about Nested Tables. These courses vary in length, difficulty, and focus. Some courses provide a basic overview of Nested Tables, while others provide a more in-depth look at the topic.

Some of the skills and knowledge you can gain from online courses include:

• How to create and use Nested Tables.
• How to query Nested Tables.
• How to modify Nested Tables.
• How to use Nested Tables to improve performance.
• How to use Nested Tables to reduce storage space.
• How to use Nested Tables to simplify data access.

Online courses can be a helpful way to learn about Nested Tables. They can provide you with the flexibility to learn at your own pace and on your own time. They can also be a more affordable option than traditional classroom-based courses.

Conclusion

Nested Tables are a powerful tool that can be used to organize and manage data in Oracle. They can improve performance, flexibility, reduce storage space, and simplify data access. There are several online courses available that can teach you about Nested Tables. These courses can provide you with the skills and knowledge you need to use Nested Tables to improve your data management and analysis.